In this paper, the main physical processes governing the nucleate and transition regimes
of the boiling of a liquid film were reviewed from the available experimental observations
in the literature. The physical tendencies observed in most experiments have been used to
develop a comprehensive phenomenological Liquid Film Boiling (LFB) model which allows the
calculation of the vaporization of liquid films in the nucleate boiling regime as well as
in the transition boiling regime. These regimes are identified by the temperatures of
saturation, Nukiyama and Leidenfrost. A particular attention has been made concerning the
estimation of Leidenfrost and Nukiyama temperatures as a function of the ambient gas
pressure. Several curves of lifetime of rather bulky droplets deposited on a hot surface
under various conditions and chosen among those which are available in the recent
literature have been used for the validation of the LFB model. The numerical results show
that the orders of magnitude and the tendencies observed experimentally are well
respected. Particularly, the LFB model reproduces well the progressive disappearance of
the Leidenfrost regime observed in experiments with sufficiently high gas pressures. In
addition, the gradual increase of the vaporization rate with wall roughness which was
previously observed experimentally near the Leidenfrost point has been correctly predicted
by the LFB model.

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